Re: [Crash-utility] [PATCH] Fix for "bt" command prints a bogus warning

On Tue, Feb 7, 2023 at 2:53 PM HAGIO KAZUHITO(萩尾 一仁) <k-hagio-ab(a)nec.comwrote: I built the upstream kernel based on the commit fa5e5c409213, so it displays the kernel version is 5.7+. $ git describe --contains fa5e5c409213 Yes, you are right. The following patch can work on upstream kernel vmcore and RHEL9 vmcore. Maybe we can check the symbols asm_common_interrupt and asm_call_on_stack as below: diff --git a/x86_64.c b/x86_64.c index 7a5d6f050c89..62036f71f632 100644 --- a/x86_64.c +++ b/x86_64.c @@ -3938,6 +3938,11 @@ in_exception_stack: if (irq_eframe) { bt->flags |= BT_EXCEPTION_FRAME; i = (irq_eframe - bt->stackbase)/sizeof(ulong); + if (symbol_exists("asm_common_interrupt")) { + i -= 1; + up = (ulong *)(&bt->stackbuf[i*sizeof(ulong)]); + bt->instptr = *up; + } x86_64_print_stack_entry(bt, ofp, level, i, bt->instptr); bt->flags &= ~(ulonglong)BT_EXCEPTION_FRAME; cs = x86_64_exception_frame(EFRAME_PRINT|EFRAME_CS, 0, @@ -6521,6 +6526,16 @@ x86_64_irq_eframe_link_init(void) else return; + if (symbol_exists("asm_common_interrupt") && !symbol_exists("asm_call_on_stack")) { + machdep->machspec->irq_eframe_link =-32; + return; + } + + if (symbol_exists("asm_common_interrupt") && symbol_exists("asm_call_on_stack")) { + machdep->machspec->irq_eframe_link =-56; + return; + } + if (THIS_KERNEL_VERSION < LINUX(2,6,9)) return; Sure. ffffba7900118fd0: 0000000000000024 ffffffff87f559f2 $........Y...... ffffba7900118fe0: ffffba790008be08 ffffba790008bdc8 ....y.......y... crash> dis asm_common_interrupt 0xffffffff88800c00 <asm_common_interrupt>: data16 xchg %ax,%ax 0xffffffff88800c03 <asm_common_interrupt+3>: call 0xffffffff88801130 <error_entry0xffffffff88800c08 <asm_common_interrupt+8>: mov %rsp,%rdi 0xffffffff88800c0b <asm_common_interrupt+11>: mov 0x78(%rsp),%rsi 0xffffffff88800c10 <asm_common_interrupt+16>: movq $0xffffffffffffffff,0x78(%rsp) 0xffffffff88800c19 <asm_common_interrupt+25>: call 0xffffffff887604a0 <common_interrupt0xffffffff88800c1e <asm_common_interrupt+30>: jmp 0xffffffff88801210 <error_return > crash> dis common_interrupt 0xffffffff887604a0 <common_interrupt>: push %r14 0xffffffff887604a2 <common_interrupt+2>: push %r13 0xffffffff887604a4 <common_interrupt+4>: push %r12 0xffffffff887604a6 <common_interrupt+6>: mov %rsi,%r12 0xffffffff887604a9 <common_interrupt+9>: push %rbp 0xffffffff887604aa <common_interrupt+10>: push %rbx 0xffffffff887604ab <common_interrupt+11>: mov %rdi,%rbx 0xffffffff887604ae <common_interrupt+14>: call 0xffffffff8875f730 <idtentry_enter_cond_rcu0xffffffff887604b3 <common_interrupt+19>: mov %eax,%ebp 0xffffffff887604b5 <common_interrupt+21>: call 0xffffffff87ee6820 <irq_enter_rcu0xffffffff887604ba <common_interrupt+26>: movzbl %r12b,%eax 0xffffffff887604be <common_interrupt+30>: mov %gs:0x778c9f32(%rip),%r13 # 0x2a3f8 0xffffffff887604c6 <common_interrupt+38>: movb $0x1,%gs:0x778cb4f4(%rip) # 0x2b9c2 0xffffffff887604ce <common_interrupt+46>: mov %rbx,%gs:0x778c9f22(%rip) # 0x2a3f8 0xffffffff887604d6 <common_interrupt+54>: mov %gs:0x17340(,%rax,8),%rdx 0xffffffff887604df <common_interrupt+63>: test %rdx,%rdx 0xffffffff887604e2 <common_interrupt+66>: je 0xffffffff88760587 <common_interrupt+2310xffffffff887604e8 <common_interrupt+72>: cmp $0xfffffffffffff000,%rdx 0xffffffff887604ef <common_interrupt+79>: ja 0xffffffff8876055e <common_interrupt+1900xffffffff887604f1 <common_interrupt+81>: mov 0x68(%rdx),%rsi 0xffffffff887604f5 <common_interrupt+85>: test %rbx,%rbx 0xffffffff887604f8 <common_interrupt+88>: je 0xffffffff8876052c <common_interrupt+1400xffffffff887604fa <common_interrupt+90>: testb $0x3,0x88(%rbx) 0xffffffff88760501 <common_interrupt+97>: je 0xffffffff8876052c <common_interrupt+1400xffffffff88760503 <common_interrupt+99>: mov %rdx,%rdi 0xffffffff88760506 <common_interrupt+102>: call 0xffffffff88a01040 <__x86_indirect_thunk_rsi0xffffffff8876050b <common_interrupt+107>: mov %r13,%gs:0x778c9ee5(%rip) # 0x2a3f8 0xffffffff88760513 <common_interrupt+115>: call 0xffffffff87ee6890 <irq_exit_rcu0xffffffff88760518 <common_interrupt+120>: movzbl %bpl,%esi 0xffffffff8876051c <common_interrupt+124>: mov %rbx,%rdi 0xffffffff8876051f <common_interrupt+127>: pop %rbx 0xffffffff88760520 <common_interrupt+128>: pop %rbp 0xffffffff88760521 <common_interrupt+129>: pop %r12 0xffffffff88760523 <common_interrupt+131>: pop %r13 0xffffffff88760525 <common_interrupt+133>: pop %r14 0xffffffff88760527 <common_interrupt+135>: jmp 0xffffffff8875f770 <idtentry_exit_cond_rcu0xffffffff8876052c <common_interrupt+140>: mov %gs:0x778b79d9(%rip),%eax # 0x17f0c 0xffffffff88760533 <common_interrupt+147>: cmp $0xffffffff,%eax 0xffffffff88760536 <common_interrupt+150>: sete %al 0xffffffff88760539 <common_interrupt+153>: test %al,%al 0xffffffff8876053b <common_interrupt+155>: je 0xffffffff88760503 <common_interrupt+990xffffffff8876053d <common_interrupt+157>: mov %gs:0x778b79cb(%rip),%rdi # 0x17f10 0xffffffff88760545 <common_interrupt+165>: sub $0x8,%rdi 0xffffffff88760549 <common_interrupt+169>: incl %gs:0x778b79bc(%rip) # 0x17f0c 0xffffffff88760550 <common_interrupt+176>: call 0xffffffff88800f90 <asm_call_on_stack0xffffffff88760555 <common_interrupt+181>: decl %gs:0x778b79b0(%rip) # 0x17f0c 0xffffffff8876055c <common_interrupt+188>: jmp 0xffffffff8876050b <common_interrupt+1070xffffffff8876055e <common_interrupt+190>: mov 0x89699b(%rip),%rax # 0xffffffff88ff6f00 <apic0xffffffff88760565 <common_interrupt+197>: xor %esi,%esi 0xffffffff88760567 <common_interrupt+199>: mov $0xb0,%edi 0xffffffff8876056c <common_interrupt+204>: movzbl %r12b,%r12d 0xffffffff88760570 <common_interrupt+208>: mov (%rax),%rax 0xffffffff88760573 <common_interrupt+211>: call 0xffffffff88a00fc0 <__x86_indirect_thunk_rax0xffffffff88760578 <common_interrupt+216>: movq $0x0,%gs:0x17340(,%r12,8) 0xffffffff88760585 <common_interrupt+229>: jmp 0xffffffff8876050b <common_interrupt+1070xffffffff88760587 <common_interrupt+231>: mov %rax,%r14 0xffffffff8876058a <common_interrupt+234>: mov 0x89696f(%rip),%rax # 0xffffffff88ff6f00 <apic0xffffffff88760591 <common_interrupt+241>: xor %esi,%esi 0xffffffff88760593 <common_interrupt+243>: mov $0xb0,%edi 0xffffffff88760598 <common_interrupt+248>: mov (%rax),%rax 0xffffffff8876059b <common_interrupt+251>: call 0xffffffff88a00fc0 <__x86_indirect_thunk_rax0xffffffff887605a0 <common_interrupt+256>: mov $0xffffffff88c02b80,%rsi 0xffffffff887605a7 <common_interrupt+263>: mov $0xffffffff8921f560,%rdi 0xffffffff887605ae <common_interrupt+270>: call 0xffffffff882d6eb0 <___ratelimit0xffffffff887605b3 <common_interrupt+275>: test %eax,%eax 0xffffffff887605b5 <common_interrupt+277>: je 0xffffffff8876050b <common_interrupt+1070xffffffff887605bb <common_interrupt+283>: mov %r14d,%ecx 0xffffffff887605be <common_interrupt+286>: mov $0xffffffff88c02b80,%rsi 0xffffffff887605c5 <common_interrupt+293>: mov $0xffffffff88f0ce20,%rdi 0xffffffff887605cc <common_interrupt+300>: mov %gs:0x778b1d8d(%rip),%edx # 0x12360 0xffffffff887605d3 <common_interrupt+307>: call 0xffffffff87f500be <printk0xffffffff887605d8 <common_interrupt+312>: jmp 0xffffffff8876050b <common_interrupt+107 > crash> dis asm_call_on_stack 0xffffffff88800f90 <asm_call_on_stack>: push %rbp 0xffffffff88800f91 <asm_call_on_stack+1>: mov %rsp,%rbp 0xffffffff88800f94 <asm_call_on_stack+4>: mov %rsp,(%rdi) 0xffffffff88800f97 <asm_call_on_stack+7>: mov %rdi,%rsp 0xffffffff88800f9a <asm_call_on_stack+10>: mov %rdx,%rdi 0xffffffff88800f9d <asm_call_on_stack+13>: call 0xffffffff88a01045 <__x86_retpoline_rsi0xffffffff88800fa2 <asm_call_on_stack+18>: leave 0xffffffff88800fa3 <asm_call_on_stack+19>: ret crash> bt -D -5 -I asm_common_interrupt+30 orc_dump: ffffffff88800c1e / asm_common_interrupt+30 -------- ip: ffffffff895886d4 -> ffffffff88800c08 / asm_common_interrupt+8 -> orc: ffffffff89790094 spo: 0 bpo: 0 spr: 5 bpr: 0 type: 1 end: 0 ip: ffffffff895886d8 -> ffffffff88800c23 / asm_common_interrupt+35 -> orc: ffffffff8979009a spo: 0 bpo: 0 spr: 0 bpr: 0 type: 0 end: 0 > crash> bt -D -5 -I common_interrupt+181 orc_dump: ffffffff88760555 / common_interrupt+181 -------- ip: ffffffff895859d8 -> ffffffff8876052c / common_interrupt+140 -> orc: ffffffff8978bd1a spo: 48 bpo: -40 spr: 5 bpr: 1 type: 0 end: 0 ip: ffffffff895859dc -> ffffffff887605dd / common_interrupt+317 -> orc: ffffffff8978bd20 spo: 0 bpo: 0 spr: 0 bpr: 0 type: 0 end: 0 crash> bt -D -5 -I ffffffff88800fa2 orc_dump: ffffffff88800fa2 / asm_call_on_stack+18 -------- ip: ffffffff89588868 -> ffffffff88800f94 / asm_call_on_stack+4 -> orc: ffffffff897902f2 spo: 16 bpo: -16 spr: 4 bpr: 1 type: 0 end: 0 ip: ffffffff8958886c -> ffffffff88800fa3 / asm_call_on_stack+19 -> orc: ffffffff897902f8 spo: 8 bpo: 0 spr: 5 bpr: 0 type: 0 end: 0 ip: ffffffff89588870 -> ffffffff88800fa4 / asm_call_on_stack+20 -> orc: ffffffff897902fe spo: 0 bpo: 0 spr: 0 bpr: 0 type: 0 end: 0 Thanks Lianbo > Thanks, > Kazu > >>>> >>>> [ 57.552655] Call Trace: > >>>> [ 57.553994] <IRQ> >>>> [ 57.555143] dump_stack+0x57/0x70 > >>>> [ 57.556930] panic+0xfb/0x2d7 > >>>> [ 57.558516] ? printk+0x58/0x6f > >>>> [ 57.560194] sysrq_handle_crash+0x11/0x20 > >>>> [ 57.562371] __handle_sysrq.cold.15+0x48/0x102 > >>>> [ 57.564663] sysrq_filter+0x312/0x3c0 > >>>> [ 57.566579] input_to_handler+0x4f/0xf0 > >>>> [ 57.568583] input_pass_values.part.7+0x117/0x130 > >>>> [ 57.571188] input_handle_event+0x138/0x5c0 > >>>> [ 57.573380] input_event+0x4b/0x70 > >>>> [ 57.575173] atkbd_interrupt+0x61f/0x6a0 > >>>> [ 57.577228] serio_interrupt+0x46/0x90 > >>>> [ 57.579192] i8042_interrupt+0x154/0x240 > >>>> [ 57.581328] __handle_irq_event_percpu+0x40/0x170 > >>>> [ 57.583788] handle_irq_event_percpu+0x30/0x80 > >>>> [ 57.586081] handle_irq_event+0x36/0x53 > >>>> [ 57.588071] handle_edge_irq+0x82/0x190 > >>>> [ 57.590096] asm_call_on_stack+0x12/0x20 > >>>> [ 57.592142] </IRQ> >>>> [ 57.593264] common_interrupt+0xb5/0x140 > >>>> [ 57.595311] asm_common_interrupt+0x1e/0x40 > >>>> [ 57.597474] RIP: 0010:default_idle+0x25/0x150 > >>>> [ 57.599735] Code: cc cc cc cc cc 66 66 66 66 90 41 55 41 54 55 65 > 8b 2d af 23 8a 77 53 66 66 66 66 90 e9 07 00 00 00 0f 00 2d 9f 37 49 00 fb > f4 <65> 8b 2d 94 23 8a 77 66 66 66 66 90 5b 5d 41 5c 41 5d c3 65 8b 05 > >>>> [ 57.609196] RSP: 0018:ffffba790008beb8 EFLAGS: 00000246 > >>>> [ 57.611875] RAX: ffffffff8876ffa0 RBX: 0000000000000003 RCX: > 0000000000000001 > >>>> [ 57.615506] RDX: 000000000001a6de RSI: 0000000000000087 RDI: > 0000000000000003 > >>>> [ 57.619142] RBP: 0000000000000003 R08: 000000146ccbc1f0 R09: > 0000000000000000 > >>>> [ 57.622770] R10: 0000000000000000 R11: 0000000000000124 R12: > ffffffffffffffff > >>>> [ 57.626386] R13: 0000000000000000 R14: 0000000000000000 R15: > 0000000000000000 > >>>> [ 57.630029] ? __cpuidle_text_start+0x8/0x8 > >>>> [ 57.632209] do_idle+0x1bd/0x240 > >>>> [ 57.633914] cpu_startup_entry+0x19/0x20 > >>>> [ 57.635966] start_secondary+0x15f/0x1b0 > >>>> [ 57.638021] secondary_startup_64+0xb6/0xc0 > >>>> crash> >>>> >>>> But I can see it in the raw stack data: > >>>> >>>> ffffba790008bdc0: 0000000000000001 0000000000000001 > >>>> ffffba790008bdd0: common_interrupt+181 0000000000000000 <---- Why is > it not in the backtrace? > >>>> ffffba790008bde0: 0000000000000000 0000000000000000 > >>>> ffffba790008bdf0: 0000000000000000 0000000000000000 > >>>> ffffba790008be00: asm_common_interrupt+30 0000000000000000 > >>>> ffffba790008be10: 0000000000000000 0000000000000000 > >>>> ffffba790008be20: ffffffffffffffff 0000000000000003 > >>>> ffffba790008be30: 0000000000000003 0000000000000124 > >>>> ffffba790008be40: 0000000000000000 0000000000000000 > >>>> ffffba790008be50: 000000146ccbc1f0 default_idle > >>>> ffffba790008be60: 0000000000000001 000000000001a6de > >>>> ffffba790008be70: 0000000000000087 0000000000000003 > >>>> ffffba790008be80: ffffffffffffffff default_idle+37 > >>>> ffffba790008be90: 0000000000000010 0000000000000246 > >>>> ffffba790008bea0: ffffba790008beb8 0000000000000018 > >>>> ffffba790008beb0: 0000000000000003 0000000000000003 > >>>> ffffba790008bec0: __cpu_online_mask ffffffffffffffff > >>>> ffffba790008bed0: 0000000000000000 do_idle+445 > >>>> ffffba790008bee0: ffffffffffffff04 c4a71aecbd899c00 > >>>> ffffba790008bef0: 000000000000008f 0000000000000000 > >>>> ffffba790008bf00: 0000000000000000 0000000000000000 > >>>> ffffba790008bf10: 0000000000000000 0000000000000000 > >>>> ffffba790008bf20: cpu_startup_entry+25 ffffba790008bf38 > >>>> ffffba790008bf30: start_secondary+351 c4a71aecbd899c00 > >>>> ffffba790008bf40: 0000000000000000 0000000000000000 > >>>> ffffba790008bf50: secondary_startup_64+182 0000000000000000 > >>>> >>>> >>>> And for RHEL9, this trial patch looks good, how does this work for > >>>> your vmcore? > >>>> https://github.com/k-hagio/crash/commit/0719360a2b76b3c03b1f7ad06caf2ce14... > < > https://github.com/k-hagio/crash/commit/0719360a2b76b3c03b1f7ad06caf2ce14... > > >>>> >>>> Unfortunately, it still doesn't work(with the above patch): > >>>> >>>> crash> bt > >>>> PID: 0 TASK: ffff9e7a47e32f00 CPU: 3 COMMAND: "swapper/3" > >>>> #0 [ffffba7900118bb8] machine_kexec at ffffffff87e5c2c7 > >>>> #1 [ffffba7900118c08] __crash_kexec at ffffffff87f9500d > >>>> #2 [ffffba7900118cd0] panic at ffffffff87edfff9 > >>>> #3 [ffffba7900118d50] sysrq_handle_crash at ffffffff883ce2c1 > >>>> #4 [ffffba7900118d58] __handle_sysrq.cold.15 at ffffffff883ceb56 > >>>> #5 [ffffba7900118d88] sysrq_filter at ffffffff883ce9a2 > >>>> #6 [ffffba7900118dc0] input_to_handler at ffffffff884fb0bf > >>>> #7 [ffffba7900118df8] input_pass_values at ffffffff884fc1b7 > >>>> #8 [ffffba7900118e20] input_handle_event at ffffffff884fe278 > >>>> #9 [ffffba7900118e50] input_event at ffffffff884fe74b > >>>> #10 [ffffba7900118e88] atkbd_interrupt at ffffffff88504e2f > >>>> #11 [ffffba7900118ee0] serio_interrupt at ffffffff884f7516 > >>>> #12 [ffffba7900118f10] i8042_interrupt at ffffffff884f8b04 > >>>> #13 [ffffba7900118f50] __handle_irq_event_percpu at ffffffff87f51430 > >>>> #14 [ffffba7900118f90] handle_irq_event_percpu at ffffffff87f51590 > >>>> #15 [ffffba7900118fb8] handle_irq_event at ffffffff87f51616 > >>>> #16 [ffffba7900118fd8] handle_edge_irq at ffffffff87f559f2 > >>>> #17 [ffffba7900118ff0] asm_call_on_stack at ffffffff88800fa2 > >>>> --- <IRQ stack> --- > >>>> RIP: 000000000001a6de RSP: ffffffffffffffff RFLAGS: 00000003 > >>>> RAX: 0000000000000124 RBX: 0000000000000000 RCX: > 0000000000000000 > >>>> RDX: 0000000000000000 RSI: 000000146ccbc1f0 RDI: > ffffffff8876ffa0 > >>>> RBP: 0000000000000000 R8: 0000000000000003 R9: > 0000000000000003 > >>>> R10: ffffffffffffffff R11: 0000000000000000 R12: > ffffffff88800c1e > >>>> R13: 0000000000000000 R14: 0000000000000000 R15: > 0000000000000000 > >>>> ORIG_RAX: 0000000000000001 CS: 0087 SS: ffffffff8876ffc5 > >>>> bt: WARNING: possibly bogus exception frame > >>>> crash> >>>> >>>> Thanks. > >>>> Lianbo > >>>> >>>> Thanks, > >>>> Kazu > >>>> >>>> >> >>>> >> crash> bt > >>>> >> PID: 0 TASK: ffff9e7a47e32f00 CPU: 3 COMMAND: > "swapper/3" > >>>> >> #0 [ffffba7900118bb8] machine_kexec at ffffffff87e5c2c7 > >>>> >> #1 [ffffba7900118c08] __crash_kexec at ffffffff87f9500d > >>>> >> #2 [ffffba7900118cd0] panic at ffffffff87edfff9 > >>>> >> #3 [ffffba7900118d50] sysrq_handle_crash at ffffffff883ce2c1 > >>>> >> #4 [ffffba7900118d58] __handle_sysrq.cold.15 at > ffffffff883ceb56 > >>>> >> #5 [ffffba7900118d88] sysrq_filter at ffffffff883ce9a2 > >>>> >> #6 [ffffba7900118dc0] input_to_handler at ffffffff884fb0bf > >>>> >> #7 [ffffba7900118df8] input_pass_values at ffffffff884fc1b7 > >>>> >> #8 [ffffba7900118e20] input_handle_event at ffffffff884fe278 > >>>> >> #9 [ffffba7900118e50] input_event at ffffffff884fe74b > >>>> >> #10 [ffffba7900118e88] atkbd_interrupt at ffffffff88504e2f > >>>> >> #11 [ffffba7900118ee0] serio_interrupt at ffffffff884f7516 > >>>> >> #12 [ffffba7900118f10] i8042_interrupt at ffffffff884f8b04 > >>>> >> #13 [ffffba7900118f50] __handle_irq_event_percpu at > ffffffff87f51430 > >>>> >> #14 [ffffba7900118f90] handle_irq_event_percpu at > ffffffff87f51590 > >>>> >> #15 [ffffba7900118fb8] handle_irq_event at ffffffff87f51616 > >>>> >> #16 [ffffba7900118fd8] handle_edge_irq at ffffffff87f559f2 > >>>> >> #17 [ffffba7900118ff0] asm_call_on_stack at ffffffff88800fa2 > >>>> >> --- <IRQ stack> --- > >>>> >> #18 [ffffba790008be08] asm_call_on_stack at ffffffff88800fa2 > >>>> >> [exception RIP: default_idle+37] > >>>> >> RIP: ffffffff8876ffc5 RSP: ffffba790008beb8 RFLAGS: > 00000246 > >>>> >> RAX: ffffffff8876ffa0 RBX: 0000000000000003 RCX: > 0000000000000001 > >>>> >> RDX: 000000000001a6de RSI: 0000000000000087 RDI: > 0000000000000003 > >>>> >> RBP: 0000000000000003 R8: 000000146ccbc1f0 R9: > 0000000000000000 > >>>> >> R10: 0000000000000000 R11: 0000000000000124 R12: > ffffffffffffffff > >>>> >> R13: 0000000000000000 R14: 0000000000000000 R15: > 0000000000000000 > >>>> >> ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 > >>>> >> #19 [ffffba790008bed8] do_idle at ffffffff87f1982d > >>>> >> #20 [ffffba790008bf20] cpu_startup_entry at ffffffff87f19a29 > >>>> >> #21 [ffffba790008bf30] start_secondary at ffffffff87e5118f > >>>> >> #22 [ffffba790008bf50] secondary_startup_64 at ffffffff87e000e6 > >>>> >> crash>>> Let me debug it more and to see what happened. > >>>> >> >>>> >> What is printed as the panic message in "log" command? > >>>> >> >>>> >> >>>> >> The kernel panic message: > >>>> >> [ 57.542538] Kernel panic - not syncing: sysrq triggered > crash > >>>> >> [ 57.545512] CPU: 3 PID: 0 Comm: swapper/3 Kdump: loaded Not > tainted 5.7.0+ #7 > >>>> >> [ 57.549160] Hardware name: Red Hat KVM/RHEL-AV, BIOS 0.0.0 > 02/06/2015 > >>>> >> [ 57.552655] Call Trace: > >>>> >> [ 57.553994] <IRQ> >>>> >> [ 57.555143] dump_stack+0x57/0x70 > >>>> >> [ 57.556930] panic+0xfb/0x2d7 > >>>> >> [ 57.558516] ? printk+0x58/0x6f > >>>> >> [ 57.560194] sysrq_handle_crash+0x11/0x20 > >>>> >> [ 57.562371] __handle_sysrq.cold.15+0x48/0x102 > >>>> >> [ 57.564663] sysrq_filter+0x312/0x3c0 > >>>> >> [ 57.566579] input_to_handler+0x4f/0xf0 > >>>> >> [ 57.568583] input_pass_values.part.7+0x117/0x130 > >>>> >> [ 57.571188] input_handle_event+0x138/0x5c0 > >>>> >> [ 57.573380] input_event+0x4b/0x70 > >>>> >> [ 57.575173] atkbd_interrupt+0x61f/0x6a0 > >>>> >> [ 57.577228] serio_interrupt+0x46/0x90 > >>>> >> [ 57.579192] i8042_interrupt+0x154/0x240 > >>>> >> [ 57.581328] __handle_irq_event_percpu+0x40/0x170 > >>>> >> [ 57.583788] handle_irq_event_percpu+0x30/0x80 > >>>> >> [ 57.586081] handle_irq_event+0x36/0x53 > >>>> >> [ 57.588071] handle_edge_irq+0x82/0x190 > >>>> >> [ 57.590096] asm_call_on_stack+0x12/0x20 > >>>> >> [ 57.592142] </IRQ> >>>> >> [ 57.593264] common_interrupt+0xb5/0x140 > >>>> >> [ 57.595311] asm_common_interrupt+0x1e/0x40 > >>>> >> [ 57.597474] RIP: 0010:default_idle+0x25/0x150 > >>>> >> [ 57.599735] Code: cc cc cc cc cc 66 66 66 66 90 41 55 41 54 > 55 65 8b 2d af 23 8a 77 53 66 66 66 66 90 e9 07 00 00 00 0f 00 2d 9f 37 49 > 00 fb f4 <65> 8b 2d 94 23 8a 77 66 66 66 66 90 5b 5d 41 5c 41 5d c3 65 8b 05 > >>>> >> [ 57.609196] RSP: 0018:ffffba790008beb8 EFLAGS: 00000246 > >>>> >> [ 57.611875] RAX: ffffffff8876ffa0 RBX: 0000000000000003 > RCX: 0000000000000001 > >>>> >> [ 57.615506] RDX: 000000000001a6de RSI: 0000000000000087 > RDI: 0000000000000003 > >>>> >> [ 57.619142] RBP: 0000000000000003 R08: 000000146ccbc1f0 > R09: 0000000000000000 > >>>> >> [ 57.622770] R10: 0000000000000000 R11: 0000000000000124 > R12: ffffffffffffffff > >>>> >> [ 57.626386] R13: 0000000000000000 R14: 0000000000000000 > R15: 0000000000000000 > >>>> >> [ 57.630029] ? __cpuidle_text_start+0x8/0x8 > >>>> >> [ 57.632209] do_idle+0x1bd/0x240 > >>>> >> [ 57.633914] cpu_startup_entry+0x19/0x20 > >>>> >> [ 57.635966] start_secondary+0x15f/0x1b0 > >>>> >> [ 57.638021] secondary_startup_64+0xb6/0xc0 > >>>> >> Thanks. > >>>> >> Lianbo > >>>> >> >>>